Machine for cutting and welding with fluid fuel



Jan. 8 1924.

J HARRIS MACHINE FOR CUTTING lAN'D WELDING WITH FLUID FUEL FiledApril 29, 1920 ZVSheets-Sheet 1 NlL, QN H- @N x\ NN a. qu @Nm *N Q MN um m, .A NN NN o ,Q ww *mm3 in@ @d 2. wm., NMS. ww om. 2m .mOn ww n.

`Ian.' 8 1924. 1,479,989

J. HARRIS MACHINE FOR CUTTING AND WELDING WITH FLUID FUEL Filed April 29, 1920 @dit attente J'OHN HARRIS, 0F LAKOOD, OHIO, ASSIGNOR T0 CARRO-@XYGEN COMPANY, 0E' PITTSBURGH, PENNSYLVANM, A CORPORATGN 0F DELAWARE.

HACHE FOR CUTTING .AND WELDING WTH FL'UD FUEL.

Application filed April 29, 1920. Serial No. 3773MB.

To all whom t may concern Be it known that l, JOHN HARRIS, a citizen of the United States, residing at Lakewood, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Machines for Cutting and Welding with F luid Fuel, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to machines of the type that are employed for cutting and welding with gases. One of the objects of the invention is to provide a machine of -this character with means whereby the speed at which the torch carriage is moved may be conveniently and etlicientlycontrolled and varied; to provide a machine oflthis character withmeans whereby the torch may be conveniently re-set when it has reached the end of its travel in one direction; to provide tor machines of this character a novel and eiicient means for moving the torch; to provide for a machine of this character means whereby the torch may be driven either by power or manually; also so to mount the.k

torch,l as `vto enable the same to be conveniently adjusted with reference to the workin order to operate in the most effective manner thereupon. Further and more limited objects of the invention will appear hereinafter in thespeciication and will be realized in and through the combinations of elements included in the claims attached to and forming a part hereof.

n thedrawings, illustrating one embodiment of my invention, Fig. 1 represents a plan view ofal machine of the character set forth; F ig. 2 a side elevation of said machine; Fig. 3 a detail in elevation of the left hand or motor-operatingend of the machine shown in Fig` 1; F ig. 4 a sectional view corresponding to the lines 4-4 of Fig. 1, certain parts being shown in elevation; Fig. 5 a sectional view corresponding to the line 5-5 of lF ig. 1, certain parts being shown in elevation; Fig. 6 a sectional detail taken through the means for clamping the torch carriage to the driving chain; and Fig. 7 a sectional elevation of the means for holdin the torch carriage on its rails.

escribing the parts by 'reference characters, 1 denotes a base plate having channeled flanges 2 constituting rails. Projecting upi wardly trom each end of the plate 1 is a vershown as supported at its outer end in a bracket 11 which may be bolted to the standard 3, as indica-ted at 12. The shaft is provided with a longitudinal keyway 13 by means of which a friction wheel 14 may be adjustably secured thereto. For the purpose of adjusting the said wheel along said shaft, to vary the speed of rotation of its cooperating friction disk, the wheel is provided with a grooved hub 15 adapted to receive the forks of a yoke 16 which is provided with a hub 17 slidably mounted upon a rod 18, parallel with the shaft 10 and conveniently supported at one end in a bracket 11 and at its opposite end in a post 19 carried by the table 8. A set screw 20 enables the wheel 14 to be secured in any position to which it may be adjusted upon the shaft 10.

21 denotes the friction disk, mounted upon a shaft 22 journaled in bearings 23 and 24 carried by upright frames or brackets 25 and I26, respectively, secured to the table 8. Slidably mounted upon the shaft 22 are the gears 27 and 28, said gears being mounted upon a common hub or sleeve 29 which may be connected to the shaft 22 by a set screw 30. By suitable adjustment of the hub 29, the gear 27 may be brought into mesh with a gear 31 and the gear 28 into mesh with a gear 32, the gears 31 and 32 being connected to a counter-shaft 33 journaled in brackets 34 and 35 carried by the standard 3. The counter-shaft 33 is provided with a worm 36 meshing with a worm wheel 37 on a shaft 38 journaled in a bracket 39 which is detachably connected to the standard 3, as by means of a screw bolt 40. The shaft 38 is provided with a worm 41 meshing with a worm wheel 42 carried by a shaft 43 which is journaled in the forks 4t provided at the upper end ot the bracket 3 and on each side of the recess A5 therein. Secured to this shaft is a sleeve 45 having a sprocket 46 thereon.

Journaled in the torte ai? of the bracket v jection 71 4l is a shaft t8 having a sprocket t9. jllfhisAH shalt is provided with a worm wheel 50 which is adapted to mesh with a worm 5l carried by a shaft 52 which is mounted in a bracket 53 pivoted to the standard 4l, as by means ot a screw bolt 5d and having an aperture 55 therethrough which is adapted to register with an aperture 56 in said standard, whereby a pin may be inserted in4 said apertures to retain the worm and the worm wheel in driving engagement. By removing the pin, the bracket 53 andthe worm shalt will drop to the inoperative position shown in Fig. 4:. 'l`he shaft 52 is provided with an. operating wheel 57 having a handle 58.

59 denotes a carriage which in cross section is preferably an inverted channel. Mounted in the ilanges of the carriage are the rods or shafts 60 each carrying a pair oi grooved wheels 61 adapted to ride upon the rails 2. Extending transversely ol the top of the carriage is a slideway 63. Mounted upon this slideway is a slide 6ft, the slide and the slideway being dovetailed,` as indicated at 65. Secured tothe slide 6ft, as by means of a screw 66, is a post 67 having in the upper end thereof a socket 68. The slide 64e is provided at each end with a downwardly extending dange. 69. lioosely mounted in these ilanges is a screw shaft 70 which extends through and is in threaded engagement with a proon top of the carriage 59. rl`he shaft 70 is provided with collars 72 secured thereto and adapted to thrust against the flanges 69, according to the direction of the rotation of said shalt. Ahand wheel 73 is provided for rotating the shaft.

Mounted in the sockety 68 is a stud 74e, said stud carrying a split sleeve i 5 the lugs 76 whereoi are connected by a screw 7i having a hand wheel T8 and adapted to clamp the said sleeve about a horizontally extending post 79 provided with a forked extension 80. Between .the forks ot this extension there is provided a segmental thread 81 adapted to receive a worm 82 on a shaft 83 provided with an operating wheel8i'. Bivoted between the forks, by means ot a pin or shaft 85, is one end of a block 86. rllhis end ot the block is provided with a worm gear segment 87 .adapted to mesh with the worm 82. The opposite end ol the block 86 is provided with a split sleeve 88 having projections 89 adapted to be connected by means of a clamp screw 90. '.lhrough the projections 89 extends a shalt 91 provided with a gear 92 between said projections, the shaft being provided with an operating wheel 93. 'lhe block 86 supports in its sleeve 88 a torch indicated generally at 9d. The torch is 'ptrovided with .a cylindrical outer surface 95 extending between upper and lower abutmen 9de and is rotatably mounted within the `internally threaded sleeve 102.

intense sleeve 96, which surrounds the surta/ce 95, between said abutments, and which is provided with a rack 97 adapted to mesh with the gear 92, whereby the torch may be adjusted longitudinally with respect to the sleeve 88. 'lhe torch is preferably of the type shown in my Patent No. 1,277,069, in which the passages for the preheating mixture Aare angularly spaced and grouped about l'a central passageway 'for the cutting oxy en. rll`he rotary adjustment of the tore within the sleeve 96 enables a jet of the preheating gas to be delivered in front oi and behind the jet for cutting oxygen and in the line of travel ot the same, thus enabling the preheating jets to operate with maximum efiiciency upon the metal to be cut.

rlhe torch is provided with a valve' block 98 containing passages for combustible gas and oxygen and is 'of the same general construction as the block shown in my Patent No. 1,277 ,069. However, instead ot' operatin the valve for cutting oxygen by means o a lever adapted to be grasped by the hand oi the operator, the stem 99 of said valve is operated by a lever 100, pivoted to the block at 101 and having an Mounted in this sleeve is a screw 103 provided with a hand wheel 10d and adapted to bear against the block. By rotating the screw, the valve lor cutting oxygen may be very accurately positioned and the supply oi'e cutting oxygen correspondingly controlled. For the purpose of driving the torch carriage 59, the latter is provided with a post 105, said post having an aperture 106 through the upper end thereoe within which there is mounted a pin 10T having a danged roller or Spool 108 thereon. Through the opening l06 and above the roller 108 there extends a chain l09 which is vmounted on the sprockets d6 and 49. Threaded in the web or cross head 110 at the top oit the post is a screw 111 lhaving an operating wheel 112 and provided at its lower end with a presser plate 113 which is adaptedI to force the chain into engagement with the spool or roller 108, thus providing a driving connection between said chain and the carriage 59.

lin orderto insure the retention ot the carriage 59 upon its track 2 and thus maintain an unbroken cutting or welding line, a post llt is slidably mounted inthe top ol the trame 59 and in a hrmket 115 secured to the othery side ot said plate and projecting therebeneath. A' spring 116 surrounds the lower end oit said post, pressat one end against the bracket 115 and at ilo its opposite end against a shoulder 117 on..

per end ot the post is v imanes the spring 116 against` a rod 119 which is secured to the standards 3 and 4.

With the parts constructed and arranged as described, the opera-tion will be as follows: When Ait is desired to drive the torch carriage-*by power, the rotation of the motor sha-ft will be transmitted to the friction wheel 14, friction *disk 21, and by either of the sets of gearsf217and 31 or 28 and 32, to the shaft 33; then from the shaft 33 through worm 36 and worm gear 37 to shaft 38 and, from the latter shaft, by the worm 41 and worm wheel 42, to the shaft 43, driving the sprockets 46 and 49 and the chain 109, the chaiin .being connected to the carriage 59 by the post 105 and the chain clamp comprising the parts 107-113. The speed'imparted to the chain 109 may be varied, not only by varying the driving engagement between the friction wheel 14 and the friction disk 21, but by employing either of the sets of gears 27 and 31 or 28 and 32. In practice, the speed at which the torch will be moved can be varied from inch per minute to 30 inches per minute.

It will be unnecessary to reverse the motor at the end of a cuttin or welding movement since, by merely s acking up on the screw 111, the driving connection between the chain and the carriage may be broken and the carriage reversed by hand, after which it may be reconnected to the chain. Any tendency of the carriage wheels to leave their tracks will be corrected by means of the yielding pressure exerted upon the carriage by the post 114, roller 118, and rod 119.

Should it be desirable to operate the torch by hand, this result may be quickly and conveniently accomplished by disconnecting the bracket 39 from the standard 3, thereby disengaging the worms 36 and 41 from their respective worm wheels 37 and 42. Then,

-by rotating the shaft 52 about its pivot 54,

the worm 51 on said shaft will be brought into mesh with the worm gear on the sprocket shaft 48, securing the worm shaft when in this position by insertinga pin into the apertures 55 and 56.

The torch may be adjusted transversely of the carriage 59 by rotating the hand wheel 73. The stud 74 provides a vertical pivot about which the torch may be swung as Well as means for adjusting the torch vertically without varying its angle of inclination to the work. The stud 79 and its mounting provide means for rotating the torch about a horizontal axis in a vertical plane. The worm 82, shaft 83, and wormgear segment 87 provide means whereby the torch may be adjusted in a vertical plane, at right angles to the former vertical plane, about the axis 85; while the manner of mounting the torch in the sleeve 96 enablesA me to rotate the torch about its own axis thereby to locate a preheating jet in advance of as well as behind the cutting oxygen jet and in the line of travel of the latter.

Having thus described my invention, what I claim is 1. In a machine ofthe character described, the combination of a base, a carriage supported by and movable along said base, a blow-pipe or torch mounted on said carriage, an operating device movable in the direction of travel of said carriage on said base and independent of said carriage, and means for connecting the said carriage with the said device.

2.y In a machine of the character described, the combination of a base, a carriage supported by and movable along said base, a

low-pipe or torch mounted on said carriage, an operating device movable in the direction of travel of said carriage on said base and independent of said carriage, and means for detachably connecting the said carriage with said device'. l

3. In a machine of the character described, the combination of a base, a carria e` supported by and movable along said ase, a

low-pipe or torch mounted on said .carriage, an endless operating device extending in the direction of travel of said car,- riage along said base, and means for detachably connecting the said carriage with said device.

4. In a machine of the character described, the combination of a carriage, a blow/pipe or torch supported thereby, an endless operating device extending in the direction of travel of said carriage, a post projecting from said carriage, and a detachable connection between the said carriage and the said post. i

5. In a machine ofthe character described, the combination of a carriage, a blowpipe or torch supported by said carriage, sprockets, a chain extending around said sprockets, means connecting the said carriage and the said chain, and means for driving the said sprockets.

6. In a machine of the character described, the combination of a supporting base, a carriage movable along said base, a blowpipe or torch supported by said carriage, sprockets supported upon said base, a chain extending around said sprockets, a detachable connection between the said carriage and the said chain, and means for driving the said sprockets.

7. In a machine of the character described, the combination of a carriage, a track, rollers for supporting the said carriage on said track, a blowpipe or torch Supported by said carriage, means for moving the said carriage along said track, and means yieldinglly pressing the said carriage toward said trac 8. lin a machine of the character described.V the first mentioned gears, Vrespectively, a

the combination of a carriage, a support therefor, .rollers for said carriage, a blowpipe or torch supported by said carriage, means for'i'noving the said carriage, and means pressing the said carriage towards said support.

9. In a machine of the character described, the combination of a carriage, a track, rollers supporting the said carriage on said track, a blowpipe or torch supported by said carriage, means for moving the said carriage along said track, a rod extending above said carriage in the direction of travel thereof, a post yieldingly supported by said carriage, and a roller carried by said post and engaging said rod.

10, lin a machine of the character described, the combination of a carriage, rollers for said carriage, a blowpipe or torch supported by said carriage, means for moving the said carriage, a rod extending above said carriage in the direction of travel thereof, and a thrust device on said carriage and cooperating with said rod to press y the carriage toward the support for the said rollers.

11. in a machine of the character described, the combination of a carriage, a blowpipe or torch supported thereby, and means for driving said carriage, said means comprising a. friction disk, a friction wheel movable across the face of said disk, a shaft carried by one of the aforesaid friction members, a pair of gears slidably mounted on said shaft, a counter shaft having a pair of gears thereon adapted to be engaged by the first mentioned gears, respectively, a carriage moving device, and operative driving connections between the second shaft and the said device.

12. fn a machine of the character described, the combination of a carriage, a blowpipe or torchV su ported thereby, and means for driving sai carriage, said means comprising a drive shaft, a second shaft 'and means for driving the same variably from the drive shaft, a third shaft, a pair of gears slidably mounted on the third shaft, a counter-shaft having a pair of gears thereon adapted to be engaged by the first mentioned gears, respectively, a carriage moving device, and operative driving connections between the third shaft and the said device. v

13. fn 'a machine of the characterv described, the combination of a carriage, a blowpipe or torch supported thereby, and means for driving said carriage, said means comprising a friction disk, a friction wheel movable across the face of said disk, a shaft carried by one of the aforesaid friction members, a pair of gears slidably mounted on said shaft, a counter shaft having a pair of gears thereon adapted to be engaged by matassa carriage moving devlce, a worm on the second shaft, a shaft having a worm wheel meshing with said worm and itself provided with aworm, a shaft having a worm wheel meshing with the second worm, an endless operating device driven by the last mentione shaft, and means connecting said device to said carriage.

14. iin a machine of the character described, the combination of a carriage, a blowpipe or torch supported thereby, and

interchangeable power and hand actuated y means for drivin said carrlage.

15. lin a mac ine of the character described, the combination of, a carriage, a blowpipe or torch supported thereby, a power shaft, means including a breakable connection for driving said carriage from said shaft, and means including a second breakable connection for driving `the said carriage independently of said shaft.

181 lin a machine of the character described, the combination of a carriage, a blowpipe or torch supported thereby, an operating device movable in the direction of trave of said carriage, means for connecting the carriage to said device, and interchangeable power actuated and manually operated means for driving the said device.

17. 1in a machine of the character described, the combination of a carriage, a blowpipe or torch su ported thereby, an operatin device mova le in the direction of trave of said carriage, means for connecting the carriage to said device, a power driven shaft, a breakable connection between said shaft and the said device, and

means including a second breakable connection for driving said device independently of the power driven shaft.

18. iin a machine of the character described, the combination. of a carriage, a blowpipe or torch supported thereby, an operating device movable in the direction of travel of said carriage, means for connecting the carriage to said device, a power driven shaft, means for transmitting power from the said shaft to the said device, said means including a movably supported counter shaft having gears thereon, and a manually operated power device for operating the first mentioned device, and a breakable conv nection between the saiddevices.

19. iin a machine of the character described, the combination of a carriage, a blowpipe or torch supported thereby, an operating device connected to said carriage, a power driven shaft, means including a breakable connection for operating said device'from said shaft, a manually operated power device for operating the first mentioned device, and a breakable connection between the said devices.

, and means for movinv annabee I 20. In a machine of the character described, the combination of a carriage, a blowpipe or torch supported thereby, an operating device connected to said carriage, a power driven shaft, means including a breakable connection for operating said device from said shaft, a ivoted shaft having a gear thereon, and a s aft connected with the said device and having a gear thereon adapted to be engaged by said worm.

21. In a machine of the character described, the combination, with a carriage, and means for movin the same, of a blowpipe support mounted on said carriage and means for moving the same with respect to said carriage, and a blowpipe or torch mounted on said support.

22. In a machine of the character described, the combination, with a carria e and means for moving the same, of a slide mounted on said carriage and means for moving the same with respect to said carriage, a blowpipe or torch, and an adustable connection between the latter and said slide.

23. In a machine of the character Adescribed, the combination, with a. carriage the same, of a support mounted on sai carriage and means for moving the same with respect to said carriage, a supporting member rotatably mounted on said support, and a blowpipe upport adjustably connected to said mem- 24. In a ,machine of the character described, the combination, with a carriage and means for moving the same, of a support mounted on said carriage and means for moving the same with respect to said carriage, a supporting member' rotatably mounted on said support and ad'ustable toward and from the same, and a blowpipe upport rotatably connected to said mem- 25. In a machine of the character described, the combination, with a carriage and means for moving the same, of a forked member supported by said carriage, a blowpipe support having a geared projection andpivotally supported between the forks of said member, and a gear mounted between the forks of said member and engaging the said geared projection.

26. In a machine of the character described, the combination, with a carriage and means for moving the same, of a forked member supported by said carriage, a blowpipe support havin a worm gear segment pivotally supporte between the forks of said member, and a worm mounted between the forks of said member and engaging the worm wheel segment.

27. In a machine of the character described, the combination, with a carriage and means for moving the same, of'a supporting member pivotally supported from the carriage, a second member pivotally supported by the first mentioned member, a third member pivotally supported by the second member, a blowpipe rotatably supported by the third member, and means cooperating with the third member for movle gth.

28. In a machine of the character described, the combination, with a carriage and means for moving the same, of a blowpipe supporting member carried by said carriage and having a sleeve, a sleeve mounted within the first mentioned sleeve, a blowpipe having a bearing cooperating with the top of the second sleeve Aand rotatably mounted in the said sleeve, and means supported by the vfirst sleeve and cooperating with the second sleeve for moving the blowpipe .longitudinally with respect to the first sleeve.

29. In a machine of the character described, the combination, with a carriage and means for moving the same, of a blowpipe supporting member carried by said carriage and having a sleeve, a sleevemounted within the first mentioned sleeve, and a blowpipe rotatably mounted in the second sleeve.

30. In a machine of the character described, the combination, with a carriage and means for movingl the same, of a sleeve supported by said carriage, and a blowpipe or torch rotatably mounted in said sleeve.

31. In a machine of the character described, the combination, with a carriage and means for moving the same, of a blowpipe or torch supported by said carriage, the said blowpipe or torch having a va ve stem for cuttingoxygen, a lever pivoted to said blowpipe or torch and adapted to engage said stem, said-lever having a sleeve, and a screw threaded through said sleeve and adapted to engage a portion of the blowpipe or torch thereb to rock the said lever about its pivot an to operate the said valve stem. v

32. In a machine of the character described, the combination, with a carriage, of a support movable with respect thereto, a member movably mounted on said support, a second member movably supported by the first member, a lthird member movably supported by the second member, a blow ipe or torch movably supported by the t ird member, and means for moving said carriage. l

33. In a machine of the character described, the combination, with a carriage, of a support movable transversely thereof, a member rotatably mounted on said support, a second member rotatably mounted on the first member, a third member ivotally connected to the second member, a lowpipe or torch adjustably mounted in the ing the blowpipe in the direction of itsv third member, and means for moving seid carriage.

34. In e machine of the character described, the combination, with o carriage, of n slide movable transversely thereof, e member `mounted on seid slide to rotate obout a vertical exis, a second merrrberD mounted on ther first member to rotate about e horizontaii exis, ethird member pivoted to the second member end adapted to be moved lo in e vertical piene, e, hlowpipe or toreh carried by the third member and longitudinelly and rotatably adjustable with respect thereto, and means for movingseid eerr'iel In testimony whereof, )I hereunto a, my 15 signet/ure.

v "gromt nrs. 

